13539-1910 HU 898 (HD 121137)

 
 
13h 53m 56.44s -19° 10' 05.1" P.A. 303.00 sep 0.4 mag 8.70,9.23 Sp F3V dist. 107.64 pc (351.12 l.y.)
 
 
Coord 2000 13539-1910 Discov num HU  898 Comp Coord arcsec 2000 13 53 56.44 -19 10 05.1
Date first 1904 Date last 2018 Obs 23
Pa first 136 Pa last 302.6 P.A. Now (θ) 307.6°
Sep first 0.4 Sep last 0.375 Sep. Now (ρ) 0.399"
Mag pri 8.70 Mag sec 9.23 delta mag (ΔM) 0.53 Spectral class F3V (yellow-white)
Pri motion ra -043 Sec motion ra
Pri motion dec -018 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 121137 Constellation Virgo SAO 158221 HIP 67859
Tycho2 6144-00162-1 HD 121137 ADS 9043 BD BD-18 3694
Distance 107.64 Distance ly 351.12
 
 
ORBITAL ELEMENTS
 
 
Period (P)128.25y Periastron (T)1984.63y Semi-major axis (a)0.323a
Eccentricity (e)0.783 Inclination (i)38.7° Longitude of periastron (ω)108.9°
Node (Ω)33° Notes ReferenceDoc2012a
Equinox2000 Last observation2011 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 277.0 0.255
2001 279.1 0.263
2002 281.1 0.272
2003 283.0 0.280
2004 284.7 0.288
2005 286.4 0.295
2006 288.0 0.302
2007 289.5 0.310
2008 291.0 0.316
2009 292.4 0.323
2010 293.7 0.330
2011 295.0 0.336
2012 296.2 0.342
2013 297.4 0.348
2014 298.6 0.354
2015 299.7 0.360
2016 300.8 0.365
2017 301.8 0.370
2018 302.8 0.375
2019 303.8 0.380
2020 304.8 0.385
2021 305.8 0.390
2022 306.7 0.394
2023 307.6 0.399
2024 308.5 0.403
2025 309.3 0.407
2026 310.2 0.411
2027 311.0 0.415
2028 311.8 0.419
2029 312.6 0.422
2030 313.4 0.426


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds13539-1910a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic